Rotary bookcase.



G. A. LAVOIB. ROTARY' BOOKOASB.

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Patented Jan. 2, 1912.

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G. A. LAVOIB. ROTARY BOOKOABIL nmomol mnu lov. 4. mo.

Patend Jan. 2, 1912.

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'l 3Min ,lavada UNITED STATES .PATENT OFFICE.

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ROTARY BOOK() ASE.

lntent'od Jan. 2, 1912.

Application Sled November 4, 1919. Serial No. 590.710.

1b all whom may concern:

Beit known that I, GERMMN A. Lavora, a subject of the King of Great Britain, residing at Glace Bay, in the Province .of Nova Scotia,'Doininion of Canada, have invented certain new and useful Improvements in Rotary Bookcasesi and I do hereby declare `arrangged as above stated ad accnt to the the' followingI to he a full, clear, and exact description of the invention, such as will enable others skilled in'thc art to which 'it ap ertains to make and use the same.

'ghisa invention relates t-orotary bookcases designed to be used in connection with writing desks. I

Ihe object of the present invention is to provide a rotary hoo case in the nature ot' a. Ferriswheel, novel means being employed to check the rotation of thil wheel at any desired point, tlg's means heiner opei'atcd by a treadle withineouvenient reach of the foot of o'porson sitting at. the desk.

n the accompan ing drawings, forming art of this speel canone-Figure 'i is a ront elevatin of the bookcase and a desk.

with portions of hoth broken away. Fig. .2 is o cross sectional view taken ou the line 2-12, F 1. Fig. 3 is a transverse sectional View through the lineI 3-3, Fig. 2. with the casing removed. Fig. 4 is an enlarged fragmentar sectional view taken on the line 4-4, ig. 2. Fig. 5 is an enlarged fragmentary cross sectional view showing the pawl in released position.

Referring now to the drawing, the hookcasc is seen to comprise a pair of s mccd destals 10, the upper ends of wliiei are ?dtmed with bearingboxes ll, within which are arranged hall races l2 which receive bearing balls 13.

' Mounted for rotation in the hearings is a horizontally disposed shaft 14., the ends of which extend beyond the hearings and are equipped with retainin nuts 15 or similar devices for preventing( isengzagciuent of the shaft. Arranged adjacent the opposite cnd 'portions of the shaft are wheels 1G. each ot? which comprises u huh formed of similar disk like halves l?, the opposing; tlat faces of these halves bein"r formed with suitable orifices that receive tle inner ends of spokes 18, pins la lining inserted transversely through the spokes and halves of the huh to secure the parts together. Each huh is tired in any preferred manner to the ahal' and rotates therewith. Arranged adjacent to the outer ends of the spokes of each wheel is a riin formed of a pair of Isimilar unnuli .'20, these nninili being prclcrahl)l rectangu lar in cross section and lit-ing arranged to clamp the spaties between their opposing flut faces. pins 2l being passed transversely through the annuli and spokes to secure the partstogetlicr. The i'iiu thus formed. is

extreme free ends of the .spores so that a portion ol each spoke projects beyond the outer periphery of the rini and forms a ratchet tooth '22,lthe purpose of which will presently appeal'.

Arranged to span the space between the wheels are swinging book shelves 23, each comprising a liottoin 24 from the side edges of which rise side ,walls Q5, and from the rear edge of which riscs a hack wall 2li, the top edges ot' thc side and hack walls being;` connected by a top wall 2. 'lhrcaded into bosses forint-d on the upper leading corners of the side walls are set screws 28, these set. screws being looscl)y engaged through suitable alim-d openings 3() tornn-d in semidcpcnd 'from the inner pcriphcries of the annuli composing the riin. Each hook shelf is thus swivelly oo nncctml to the rim of the. wheel and it will be observed thaf each shell' is situated ap|u-oxiimitely mid- A circular oppositcly arranged lugs 3l, which way between the olitcr ends of adjacent spokes, this construction permitting of the sielves being cushioned against shock by virtue of the slightly yielding tendencies of that. ,portion of the wheel riin between ndjaeent spola-s.

l ii removing or replacing| books upon the \shel\'c:i the whccl riui is gras icd hy the ha nd nml rotated until the open liront end of thtl desired sla-.lt confronts the operator, and for i-itoppin; |,r thc rotation of the device. at

this nioiucut. without. retaining the grasp upon the wheel, the following cwistruction is employed: Arranged below and confront-- ing the rini of one of the wheels is a vertically disposed link' 3'2, this link being loo equipped at its upper end with a liowed paw head 3.3, the-extremities of which engage thel run ot the wheel adjacent to the roots of neighboring 'ratchet tceth these free ends heini.: so spaced that when the pawl is in engaged position there will he hut. very little play between the pawl und ratchet.l teeth so that. oscillintion of the wheel will he prevented. The lilik is guided in itsl movementsvby eyes 33', these eyes pro.

jecting from the inner side of one of the or similar housing or easing 40 is arranged '4.' pedestals 10 nsshown. 'lhe lower end of over the rotary shelves, this easingi,` compristhe link 32 is pivotally connected to a roek ing a bottoni 4l which supports the pedestals lever 34 carried by o lever 34'. this level' l0 and from the fro-nt edge of this bottom 5 bein arranged to project laterally fi-oin the rises a front wall 4:: whieh is provided with wliee and transversely arrose tlie wiieel as a 'lass door 4:'. to pei-lait necesi-i to the 4t shown in Fig. 1. The lever is falermned site ves. From the rear edge of the bottom upon a poet'.A 35 and terminates at its free wall rises a reni' wall ll whieh is equipped extremity in a treadle 36. A lent' spring with a glass door -l whieh permits o ac- ;3 3T is interposed between the free end poreess to the hat-ks of the hook shelves for tion of the lever and the floor and operatesdusting;r and the like. From the side edges 4| to normally hold the piiwl head in eagageof the hottom rise side walls 46, the top nient. with the ratchet teeth. The opei'ator edges of the front, side ainl rear walls bedepresses the trendle 36 against the iressure ing eomieeted h v a top wall 47. 15 of' the spring 37, thereby moving tie pawl What is claimed is:

out of engagement with the ratehet teeth rotinv lnmkease inelading standards 5t when it is desired to rotate the wheel no as having heariii hoses, a shaft Journnled in to expose nur particular shelf. Upon the said hearing loses. spaeed wheels on seid removal of the foot from the treadle, the shafts having radially arranged projections 2o spring will return the piiwl to its engaged on their rims forming ratehet -teeth, a

position so that the wheel will be held treadle arranged transversely the rim of 5l against rotation. one of said wheels. a stand link loosely se- Tlie bookcase as above stated is designed eared to said treadle and having one end to be used iii connection with a desk, the enipped with an areinite pawl the branches 25 saine in this instance being designated hy o whieh are adapted to hear upon the rim the numeral 38, and it. will he observed that of the last. named wheel and operatively enl the lever 34 is passed through sluts 39 gagetl said ratehet teeth. formed in the base edges of the denk walls, ln teetimonv whereof,l aliix my signature, :tliislconstrutioli )zeriiiittinglof the treadl in presence o two witnesses. 30' ein a a imes wit iin eoiiveiuen reach o the foot. of a person using the desk. GIR'MUN A' LAVOE I It. in desirable that the book shelves should \\'itnesses:

, be shielded from dant.l and other foreign imit- Amas J. MM'DoxALo, i tei', and to attain this end a wooden, nl'etnl li. M. S'raunni'. i i

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